Thanks for the very detailed explanation.

Scaling the root actor, which is usually named BODY in most figures, will normally cause everything parented to it to scale as well. This should happen regardless or whether the other actors, or props parented to the figure, have their limits forced, or even if they are locked. The only precondition for this, that I know of, is that internally the 'root actor' needs to use 'propagatingScale' rather that plain old 'scale'. Virtually all root actors do use 'propagatingScale', so it's unlikely, but not impossible, that this is the cause of the problem.

A more likely possibility is that the part you are trying to scale is not the root actor. Is the part you are trying to scale named "BODY" or "Body"? If it is, then I'm stumped, and don't have a clue what the problem is. If not, then we have to determine what part is the root actor.

You can find out by inspecting the cr2 in a text editor. If the figure is in crz (compressed) format, you will need to decompress it to a cr2 first. Open the cr2 in a text editor and use the editors search function to do a case sensitive search for the string "root", the next word on the same line should be the internal name of the root actor. It's possible that the internal name is not the same as the display name, so just to be sure use the name you found in the root actor line as another search string, find the second occurrence of the string. Two lines under that, it should say 'name' followed by the display name (the name used in menus etc). If you are scaling a part with this name, then the whole car should scale. If it does not, check to see if there is a channel named 'propagatingScale' in the BODY, if there is, then I don't think I can help, if not, you to need to edit the internal name of the 'scale' channel to use 'propagatingScale' (back up the file first).